The relationship between karst formation and geological disasters in Qingjiang river basin,western Hubei Province
CHANG Hong
ZHANG Yu
LI Jing-fu
TAN Jian-min
HAN Hui-qing
Abstract：Carbonate rocks are widely distributed in the Qingjiang river basin in western Hubei Province. Karst geological disasters often take place in this area.Based on a survey of geological disaster in 1 1 coun-ties,the relationship between karst formation and geological disasters is analyzed and evaluated using statis-tical and analogical methods.The relationship is summarized in four main points,(1 )Karst cave systems may cause karst collapse and disaster chains.(2)Landslides or avalanches are induced by karstification and enhanced by fractures expansion under the karst dissolution process.Dangerous rocks or potentially unstable slopes are generally linked with karst dissolution and weathering.(3)It is indicated that calcareous cementa-tion among rocks can enhance the stability of landslides and avalanches.(4)For the case study in Xintang stone forest,karst phenomena and landslides were identified.It is proposed that it is necessary to investigate the karst background of disaster areas,and evaluate the impact of calcareous cementation on the stability of landslides and avalanches by studying its distribution and reinforcement effects.
Keywords：karstgeological disasterwestern Hubei ProvinceQingjiang river basin
Publication Date：2014-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：6( 288-293 )